<body>
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
    <li class="nav-item">
        <a class="nav-link active" aria-current="page" href="{{ url_for('index') }}">系统主页</a>
    </li>
    <li class="nav-item">
        <a class="nav-link" href="{{ url_for('mine') }}">个人中心</a>
    </li>
    <li class="nav-item">
        <a class="nav-link" href="{{ url_for('search') }}">搜索课程</a>
    </li>
    <li class="nav-item dropdown">
        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
            帮助
    </a>
    <ul class="dropdown-menu" aria-labelledby="navbarDropdown">
        <li><a class="dropdown-item" href="{{ url_for('regulation') }}">规章制度</a></li>
    </ul>
    </li>
</ul>
</body>